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<head>
  <title>Tests AccessFu TraversalRules</title>
  <meta charset="utf-8" />
  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />

  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js">
  </script>
  <script type="application/javascript"
          src="chrome://mochikit/content/chrome-harness.js">
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  <script type="application/javascript" src="../common.js"></script>
  <script type="application/javascript" src="../browser.js"></script>
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  <script type="application/javascript" src="../role.js"></script>
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  <script type="application/javascript" src="../layout.js"></script>

  <script type="application/javascript">
    Components.utils.import("resource://gre/modules/accessibility/Traversal.jsm");

    var vc;

    function accessibleIs(aAccessible, aExpected, aMessage) {
      if (!aAccessible && aAccessible == aExpected) {
        ok(true, "Accessible is null. " + aMessage);
      } else {
        ok(aAccessible.DOMNode.id == aExpected || aAccessible.name == aExpected,
          "expected '" + aExpected + "', got " + prettyName(vc.position) +
          ". " + aMessage);
      }
    }

    function walkSequence(aMethod, aRule, aExpectedSequence) {
      for (var expected of aExpectedSequence) {
        ok(TraversalHelper.move(vc, aMethod, aRule),
          "successfully did " + aMethod + " with " + aRule);
        accessibleIs(vc.position, expected, "landed on correct accessible");
      }
    }

    function testTraversalHelper(aRule, aExpectedSequence) {
      vc.position = null;

      walkSequence('moveNext', aRule, aExpectedSequence);

      ok(!TraversalHelper.move(vc, 'moveNext', aRule), "reached end");

      TraversalHelper.move(vc, 'moveLast', 'Simple');

      walkSequence('movePrevious', aRule,
        Array.from(aExpectedSequence).reverse());

      ok(!TraversalHelper.move(vc, 'movePrevious', aRule), "reached start");

      vc.position = null;

      ok(TraversalHelper.move(vc, 'moveFirst', aRule), "moveFirst");

      accessibleIs(vc.position, aExpectedSequence[0],
        "moveFirst to correct accessible");

      ok(TraversalHelper.move(vc, 'moveLast', aRule), "moveLast");

      accessibleIs(vc.position, aExpectedSequence[aExpectedSequence.length - 1],
        "moveLast to correct accessible");
    }


    function doTest()
    {
      var doc = currentTabDocument();
      var docAcc = getAccessible(doc, [nsIAccessibleDocument]);
      vc = docAcc.virtualCursor;

      testTraversalHelper('Landmark',
        ['heading-1', 'heading-2', 'statusbar-1']);

      testTraversalHelper('List',
        ['Programming Language', 'listitem-2-1', 'listitem-3-1']);

      testTraversalHelper('Section',
        ['heading-1', 'heading-2', 'heading-3',
         'heading-5', 'link-1', 'statusbar-1']);

      SimpleTest.finish();
    }

    SimpleTest.waitForExplicitFinish();
    addLoadEvent(function () {
      /* We open a new browser because we need to test with a top-level content
         document. */
      openBrowserWindow(
        doTest,
        getRootDirectory(window.location.href) + "doc_traversal.html");
    });
  </script>
</head>
<body id="body">

  <a target="_blank"
     title="Add tests for AccessFu TraversalRules"
     href="https://bugzilla.mozilla.org/show_bug.cgi?id=xxx">Mozilla Bug xxx</a>
  <p id="display"></p>
  <div id="content" style="display: none"></div>
  <pre id="test">
  </pre>
</body>
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